USB signal awakening device

Abstract

The utility model discloses a universal serial bus (USB) signal wake-up device, which comprises a master control circuit (1), a peripheral interface (2), a switch switching circuit (3) and a wake-up circuit (5), when receiving a signal from the USB data positive pin (D +) or the USB data negative pin (D-), the wake-up circuit (5) switches the level of the output end from a high level / low level to a low level / high level so as to generate a falling edge / rising edge for triggering the main control circuit (1) to wake up; after being awakened, the main control circuit (1) controls the input end of the switch switching circuit (3) to be switched from being communicated with the second output end to being communicated with the first output end; therefore, the USB wake-up function can be realized without accessing a standard USB port peripheral, the wake-up function of the master control can be realized as long as the peripheral is provided with the USB data positive pin and the USB data negative pin, and the USB wake-up circuit is suitable for some products which do not have standard USB ports, have no wake-up function of the system and need ports as wake-up systems.

Description

TECHNICAL FIELD

[0001] The utility model relates to device wake -up technical field especially, it relates to a USB signal wake -up device. BACKGROUND

[0002] With the development of artificial intelligence, some intelligent products use various ports to wake up the machine. Port wake -up system is a new concept combining artificial intelligence technology and operating system port management. In the field of artificial intelligence, port usually refers to the communication port for data transmission in computer system, while in the operating system level, port wake -up involves how the system receives and responds to external signals or data through specific ports.

[0003] Currently, USB interface plugging is mainly used for host to discover the access or removal of slave. There are also USB devices that act as remote wake -up host, which is controlled by system files. The main system must have corresponding system file configuration to support wake -up function, and the USB device must also support wake -up function. This method can only be used in working scenarios where both the system and the device support wake -up function. The device is limited, the port is limited, the range of use scenarios is small, and only standard USB port devices such as mouse, keyboard and other human-computer interface devices can be met. However, some products without standard USB port and without wake -up function of the system, but need port to wake up the system, such as AR glasses, which need to be inserted into the host through the magnetic port to wake up the system, lack of solutions.

[0004] The above information disclosed in the background section is only included to enhance the understanding of the background of the present disclosure, and therefore can contain information that is not prior art known to those of ordinary skill in the art at the time of the present disclosure. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to provide a USB signal wake -up device for the above -mentioned defects of the prior art.

[0006] The technical scheme adopted by the utility model to solve its technical problem is: a USB signal wake -up device is constructed, which comprises a main control circuit, an external interface, a first switch circuit, and a wake -up circuit.

[0007] The external interface comprises a USB data positive pin and a USB data negative pin, and is used for connecting external devices with USB data positive pin and USB data negative pin.

[0008] The first switch circuit has an input end connected with the USB data positive pin and the USB data negative pin respectively, a first output end connected with the pin of the main control circuit for realizing USB data interaction, and a second output end connected with the input end of the wake -up circuit.

[0009] The output end of the wake-up circuit is connected to the pin of the master control circuit with falling edge / rising edge wake-up function, and is used for switching the level of the output end from high level / low level to low level / high level when receiving the signal from the USB data positive pin or the USB data negative pin, so as to generate a falling edge / rising edge triggering the wake-up of the master control circuit.

[0010] The master control circuit is connected to the control end of the first switch switching circuit, and is used for controlling the input end of the first switch switching circuit to switch from being in communication with the second output end to being in communication with the first output end after wake-up.

[0011] Further, in the USB signal wake-up device, the wake-up circuit comprises a switch tube, a first resistor, a second resistor, a third resistor and a rectifier circuit, the chip pin voltage is grounded in sequence through the first resistor and the switch tube, the node between the first resistor and the switch tube is connected to the master control circuit, the control end of the switch tube is grounded through the second resistor, the input end of the rectifier circuit is connected to the second output end of the first switch switching circuit, and the output end of the rectifier circuit is connected to the control end of the switch tube through the third resistor.

[0012] Further, in the USB signal wake-up device, the rectifier circuit comprises a first diode and a second diode, the anode of the first diode is connected to one pin of the first output end of the first switch switching circuit, the anode of the second diode is connected to another pin of the first output end of the first switch switching circuit, and the cathodes of the first diode and the second diode are connected to the control end of the switch tube through the third resistor.

[0013] Further, in the USB signal wake-up device, the switch tube is an NPN type triode, the emitter thereof is grounded, the base thereof is connected to the second resistor and the third resistor, and the collector thereof is connected to the master control circuit and also connected to the chip pin voltage through the first resistor.

[0014] Further, in the USB signal wake-up device, the device is a neck ring, the peripheral device that is docked with the peripheral interface is AR glasses or a charging box, and the AR glasses are docked with the peripheral interface through a magnetic suction port.

[0015] Further, in the USB signal wake-up device, the device further comprises a second switch switching circuit and a charging box plug-in detection circuit.

[0016] The second switch switching circuit is connected with the second output end of the first switch switching circuit, and the first output end of the second switch switching circuit is connected with the battery charging circuit of the device.

[0017] The charging box plug-in detection circuit is connected with the main control circuit, and is configured to send a charging detection signal to the main control circuit when detecting that the charging box is plugged into the peripheral interface through a pressure detection mode.

[0018] The main control circuit is connected with the control end of the second switch switching circuit, and is configured to control the input end of the second switch switching circuit to switch from being in communication with the second output end to being in communication with the first output end after receiving the charging detection signal when the device is in sleep mode.

[0019] Further, in the USB signal wake-up device, the first switch switching circuit and the second switch switching circuit can be a double-channel USB switch or a multiplexer supporting USB signals at the input end.

[0020] Further, in the USB signal wake-up device, the charging box plug-in detection circuit comprises a Hall sensor.

[0021] The USB signal wake-up device has the following advantages: in the USB signal wake-up device, the USB wake-up function can be realized without connecting a standard USB port peripheral, and the device uses a peripheral interface to connect a peripheral with USB data positive pins and USB data negative pins; if the main control circuit is not in sleep mode, the signals of the USB data positive pins and the USB data negative pins of the peripheral are directly output to the main control circuit through the first switch switching circuit; if the main control circuit is in sleep mode, the signals are output to the wake-up circuit through the first switch switching circuit, so as to generate a falling edge / rising edge triggering the wake-up of the main control circuit; once the wake-up is triggered, the signals of the peripheral interface are still normally output to the main control circuit through the first switch switching circuit; in this way, the wake-up function can be realized as long as the peripheral has USB data positive pins and USB data negative pins based on the USB signal wake-up device, and the USB signal wake-up device is suitable for products without a standard USB port and without a wake-up function, but the products need a port to realize the wake-up function. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on the provided drawings:

[0023] Figure 1is a structural block diagram of embodiment one of the USB signal wake-up device;

[0024] Figure 2 is a peripheral interface circuit diagram;

[0025] Figure 3 is a circuit diagram of embodiment one;

[0026] Figure 4 is a structural block diagram of embodiment two of the USB signal wake-up device;

[0027] Figure 5 is a circuit diagram of embodiment two;

[0028] In the drawings, various reference numerals refer to:

[0029] 1, main control circuit; 2, peripheral interface; 3, first switch switching circuit; 4, second switch switching circuit; 5, wake-up circuit; 6, charging box plug-in detection circuit. DETAILED DESCRIPTION

[0030] For the demand of some products without standard USB port and without wake-up function of the system, but also need the port to do the wake-up system in the prior art, there is a lack of corresponding solution, the utility model provides a USB signal wake-up device, the main idea is: the device includes main control circuit, peripheral interface, first switch switching circuit, wake-up circuit, using peripheral interface to access the peripheral with USB data positive pin and USB data negative pin, the main control circuit is in the state without hibernation, it is the input end of the first switch switching circuit and the first output end are communicated, so if the main control circuit is not hibernation, then the signal of the USB data positive pin and the USB data negative pin of the peripheral will be output to the main control circuit through the first switch switching circuit, and if the main control circuit is hibernation, then the input end of the first switch switching circuit is communicated with the second output end, then the signal of the interface access will be output to the wake-up circuit, the level of the output end of the wake-up circuit is switched from high level to low level, thereby generating a falling edge / rising edge triggering the wake-up of the main control circuit, once wake-up, the signal of the peripheral interface is still output to the main control circuit through the first switch switching circuit, thus, the USB wake-up function can be realized without accessing the standard USB port peripheral in the utility model, as long as the peripheral has USB data positive pin and USB data negative pin, the wake-up function can be realized, and it is suitable for some products without standard USB port and without wake-up function of the system, but also need the port to do the wake-up system.

[0031] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show the typical embodiments of the utility model. However, the utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. It should be understood that the embodiments of the utility model and the specific features in the embodiments are detailed description of the technical scheme of the application, and not the limitation of the technical scheme of the application, and the technical features in the embodiments of the utility model and the embodiments can be combined with each other without conflict.

[0032] Embodiment one

[0033] Reference Figure 1 The utility model discloses a USB signal wake -up device, including host computer circuit 1, peripheral interface 2, first switch switching circuit 3, wake -up circuit 5.

[0034] The peripheral interface 2 includes USB data positive pin D+ and USB data negative pin D-, is used to access the peripheral with USB data positive pin D+ and USB data negative pin D-, in this embodiment, the device can be a neck ring, and the peripheral that is docked with the peripheral interface 2 is VR glasses, and the embodiment can realize that the magnetic suction mouth of VR glasses is inserted into the peripheral interface 2 to realize the wake -up function.

[0035] The first switch switching circuit 3: its input end is connected with USB data positive pin D+ and USB data negative pin D- respectively, its first output end is connected with the pin for realizing USB data interaction of host computer circuit 1, and its second output end is connected with the input end of wake -up circuit 5.

[0036] The wake -up circuit 5, its output end is connected with the pin of host computer circuit 1 with falling edge wake -up function, is used to switch the level of output end from high level to low level when receiving the signal from USB data positive pin D+ or USB data negative pin D-, to generate a falling edge that triggers the wake -up of host computer circuit 1.

[0037] The host computer circuit 1: also system host, is connected with the control end of the first switch switching circuit 3, is used to control the input end and the second output end of the first switch switching circuit 3 to communicate when hibernating, and the input end of the first switch switching circuit 3 is switched to communicate with the first output end after wake -up.

[0038] It should be noted that, because the main control selected in the embodiment is a falling edge wake-up, the wake-up circuit 5 is by default outputting a high level, and outputs a low level only when receiving a signal of the USB data positive pin D+ or the USB data negative pin D-. In fact, the main control can also be selected as a rising edge wake-up, and the output of the wake-up circuit 5 only needs to be inverted. This rising edge wake-up scheme is a simple modification of the embodiment and is within the protection scope of the utility model.

[0039] Specifically, the peripheral interface 2 can be a non-standard USB interface, the pins of which are related to the interface of the peripheral device to be plugged in, and the interface of the peripheral device has a USB data positive pin D+ and a USB data negative pin D-. The embodiment realizes wake-up by means of the signals of the two pins. Figure 2 , which is an interface corresponding to the magnetic suction port of the VR glasses.

[0040] Referring to Figure 3 , specifically, the first switch switching circuit 3 can adopt a double-channel USB switch or a multiplexer supporting USB signals at the input end, such as TI TUSB1032, NXP NX3D51A, etc. As shown in Figure 3 , the D+ and D- pins of the first switch switching circuit 3 constitute its input end, which is used to receive the USB data signal from the external peripheral device; the EN pin of the first switch switching circuit 3 is connected with the main control circuit 1, which is used to input the enable signal; the OUT1+ and OUT1- pins of the first switch switching circuit 3 are two pins of its first output end, and the OUT2+ and OUT2- pins are two pins of its second output end.

[0041] When sleeping, the main control circuit 1 controls the input end and the second output end of the first switch switching circuit 3 to be in communication. Specifically, generally, the IO pin is high when the main control is sleeping, and this high level directly enables the first switch switching circuit 3, as shown in Figure 3 , MCHG_SW_H, so that the output of the first switch switching circuit 3 selects the second output end. When the IO pin of the main control receives the falling edge wake-up signal of the wake-up circuit 5, it returns to normal work and flips the level of MCHG_SW_H, so that the output of the first switch switching circuit 3 selects the first output end.

[0042] Referring to Figure 3 , specifically, the wake-up circuit 5 includes a switch tube, a first resistor, a second resistor, a third resistor, and a rectifier circuit. The chip pin voltage is sequentially grounded through the first resistor and the switch tube. The chip pin voltage here refers to the voltage corresponding to the default high level of the IO pin of the main control circuit. The node between the first resistor and the switch tube is connected with the main control circuit 1, and the node provides a wake-up signal (as shown in Figure 3The control end of the switch tube is grounded via the second resistor, the input end of the rectifier circuit is connected to the second output end of the first switch switching circuit 3, and the output end of the rectifier circuit is connected to the control end of the switch tube via the third resistor.

[0043] More specifically, the rectifier circuit is specifically composed of a first diode and a second diode. The anode of the first diode is connected to one pin OUT2+ of the first output end of the first switch switching circuit 3, the anode of the second diode is connected to another pin OUT2- of the first output end of the first switch switching circuit 3, and the cathodes of the first diode and the second diode are connected to the control end of the switch tube via the third resistor.

[0044] More specifically, the switch tube can be a triode, a MOS tube, etc., and the embodiment is specifically an NPN type triode. The emitter of the triode is grounded, the base of the triode is connected to the second resistor and the third resistor, and the collector of the triode is connected to the main control circuit 1 and also connected to the chip pin voltage via the first resistor.

[0045] The working principle of the embodiment is as follows: When the USB signals D+ and D- come from the interface 2 and there is no sleep, the main control circuit 1 outputs an enable signal to the first switch switching circuit 3, so that the output of the first switch switching circuit 3 selects OUT1+ and OUT1-. Therefore, after the USB signals D+ and D- come from the interface 2, they are directly given to the main control circuit 1 through OUT1+ and OUT1-. When the main control circuit 1 is in sleep, the enable signal of the first switch switching circuit 3 makes the output of the first switch switching circuit 3 select OUT2+ and OUT2-. Therefore, after the USB signals D+ and D- come from the interface 2, they are respectively connected to the base of the triode through the diodes. A falling edge IO signal is given to the main control circuit 1 through the triode (the function of this IO only needs to be set as an input pin at the main control end to take effect), wherein the principle of generating the falling edge is as follows: Before the USB signals D+ and D- are connected, the base of the triode is disconnected due to the grounding of the pull-down resistor, so the CLASS_IN_DET is high. After the USB signals D+ and D- are connected, the positive voltage is given to the base of the triode through the diode, so the triode is turned on, and the CLASS_IN_DET is grounded through the triode, i.e., it is dropped to the level. Thus, the falling edge is generated. After the main control IO pin detects the falling edge of the CLASS_IN_DET, the system can be awakened. After being awakened, the main control outputs an enable signal to the first switch switching circuit 3, so that the output of the first switch switching circuit 3 selects OUT1+ and OUT1-. Therefore, after the USB signals D+ and D- come from the interface 2, they are directly given to the main control circuit 1 through OUT1+ and OUT1-.

[0046] The magnetic suction port of the AR glasses is required to access the neck ring in the neck ring project to wake up the system, the magnetic suction port is not a standard interface and does not have the function of waking up the system, therefore, the circuit of the utility model is used to meet the requirement of waking up the neck ring system.

[0047] In summary, the embodiment has the following beneficial effects: the USB signal wake-up device has the following beneficial effects: in the utility model, the standard USB port peripheral is not required to be connected, the USB wake-up function can be realized, if the host control circuit is not in sleep, the signals of the USB data positive pin and the USB data negative pin of the peripheral are directly output to the host control circuit through the first switch switching circuit, if the host control circuit is in sleep, the signals are output to the wake-up circuit through the first switch switching circuit, the level of the output end of the wake-up circuit is switched from high level to low level, thereby a falling edge triggering the wake-up of the host control circuit is generated, once the wake-up is realized, the signals of the peripheral interface are still normally output to the host control circuit through the first switch switching circuit, in this way, based on the utility model, as long as the peripheral has the USB data positive pin and the USB data negative pin, the wake-up function can be realized, and the utility model is suitable for some products without the standard USB port and without the wake-up function of the system, but the port is required to wake up the system.

[0048] Embodiment two

[0049] Reference Figure 4 The embodiment is different from embodiment one in that the peripheral connected with the peripheral interface 2 can be the charging box in addition to the AR glasses, the device further comprises a second switch switching circuit 4 and a charging box plug-in detection circuit 6.

[0050] The second switch switching circuit 4: the input end is connected with the second output end of the first switch switching circuit 3, the second output end is connected with the wake-up circuit 5, and the first output end is connected with the battery charging circuit of the device.

[0051] The charging box plug-in detection circuit 6: connected with the host control circuit 1, used for sending a charging detection signal to the host control circuit 1 when the charging box is detected to be plugged into the peripheral interface 2 through the pressure detection mode;

[0052] The host control circuit 1 is connected with the control end of the second switch switching circuit 4, used for controlling the input end of the second switch switching circuit 4 to be switched from being in communication with the second output end to being in communication with the first output end after the charging detection signal is received in sleep.

[0053] The charging box plug-in detection circuit 6 can be a Hall sensor installed near the peripheral interface 2. When the AR glasses and the charging box are inserted, the depth is inconsistent. When the AR glasses are inserted into the peripheral interface 2, the Hall sensor cannot be touched. When the charging box is inserted, the Hall sensor is pressed. When the charging box is inserted, the Hall signal at the low level is monitored, which is the charging detection signal.

[0054] Reference Figure 5 In the second switch switching circuit 4, the D+ and D- pins constitute the input end, which is used to receive the signal from the first switch switching circuit 3; the EN pin of the second switch switching circuit 4 is connected with the main control circuit 1, which is used to access the enable signal; the OUT1+ and OUT1- pins of the second switch switching circuit 4 are two pins of the first output end, and the OUT2+ and OUT2- pins constitute two pins of the second output end.

[0055] In the embodiment, the enable signal of the second switch switching circuit 4 is high by default, that is, the output of the second switch switching circuit 4 is the second output end by default, that is, the default high level of the main control IO pin is directly given to the second switch switching circuit 4. The enable state of the first switch switching circuit 3 is the same as that of the first embodiment, which is determined by whether it is in sleep or not, and the difference from the first embodiment is that the enable state of the second switch switching circuit 4: in this embodiment, the Hall signal needs to be considered when sleeping. If the Hall signal is not monitored at the low level, the enable signal of the second switch switching circuit 4 is high as in the first embodiment; if the Hall signal is low, the enable signal of the second switch switching circuit 4 is switched to low.

[0056] The working principle of the embodiment is: when the main control is in sleep, the first switch switching circuit 3 controls the input signal to be switched to OUT2+ and OUT2-, that is, to the second switch switching circuit 4. At this time, if the Hall sensor detects whether the charging box is inserted externally, if yes, it means that the system host needs to be charged, and the output of the second switch switching circuit 4 selects OUT1+ and OUT1-. If not, the output of the second switch switching circuit 4 selects OUT2+ and OUT2-, that is, the signal is given to the wake-up circuit 5, so as to wake up the system host.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0058] The terms "first", "second", and the like as used in the specification, which contain a numerals, can be used to describe various constituent elements, but these constituent elements are not limited by these terms. The purpose of using these terms is only to distinguish one constituent element from other constituent elements. For example, a first constituent element can be named as a second constituent element, and similarly, a second constituent element can be named as a first constituent element without departing from the scope of the utility model.

[0059] The "connection" or "connection" not only includes directly connecting two entities, but also indirectly connecting through other entities with beneficial improvement effect.

[0060] In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0061] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known structures and techniques are not shown in detail in order not to obscure the understanding of the specification.

[0062] Similarly, it should be understood that, in order to simplify the disclosure and help understand one or more of the various aspects of the utility model, in the above description of the exemplary embodiments of the utility model, various features of the utility model are sometimes grouped together in a single embodiment, figure, or description thereof. However, this disclosure should not be interpreted as reflecting the intention that the claimed utility model requires more features than the features explicitly recorded in each claim. Each claim itself is a separate embodiment of the utility model.

[0063] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the above specific embodiments, and the above specific embodiments are only illustrative, but not restrictive, and those skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, which all belong to the protection of the utility model.

Claims

1. A USB signal wake-up apparatus, characterized by, The device comprises a main control circuit (1), a peripheral interface (2), a first switch switching circuit (3), and a wake-up circuit (5). The peripheral interface (2) comprises a USB data positive pin (D+) and a USB data negative pin (D-), and is used for accessing a peripheral device with the USB data positive pin (D+) and the USB data negative pin (D-). The first switch switching circuit (3) is connected with the USB data positive pin (D+) and the USB data negative pin (D-) at the input end, and is connected with the main control circuit (1) at the first output end for realizing USB data interaction, and is connected with the wake-up circuit (5) at the second output end. The wake-up circuit (5) is connected with the main control circuit (1) at the output end with falling edge / rising edge wake-up function, and is used for switching the level of the output end from high level / low level to low level / high level when receiving a signal from the USB data positive pin (D+) or the USB data negative pin (D-), so as to generate a falling edge / rising edge triggering the main control circuit (1) to wake up. The main control circuit (1) is connected with the control end of the first switch switching circuit (3), and is used for controlling the input end of the first switch switching circuit (3) to switch from being in communication with the second output end to being in communication with the first output end after waking up.

2. The USB signal wake-up apparatus of claim 1, wherein, The wake-up circuit (5) comprises a switch tube, a first resistor, a second resistor, a third resistor, and a rectifier circuit. The chip pin voltage is grounded in sequence via the first resistor and the switch tube. The node between the first resistor and the switch tube is connected with the main control circuit (1). The control end of the switch tube is grounded via the second resistor. The input end of the rectifier circuit is connected with the second output end of the first switch switching circuit (3). The output end of the rectifier circuit is connected with the control end of the switch tube via the third resistor.

3. The USB signal wake-up apparatus of claim 2, wherein, The rectifier circuit comprises a first diode and a second diode. The anode of the first diode is connected with one pin of the first output end of the first switch switching circuit (3). The anode of the second diode is connected with another pin of the first output end of the first switch switching circuit (3). The cathodes of the first diode and the second diode are connected in common and then connected with the control end of the switch tube via the third resistor.

4. The USB signal wake-up apparatus according to claim 2 or 3, characterized in that, The switch tube is an NPN triode. The emitter thereof is grounded. The base thereof is connected with the second resistor and the third resistor. The collector thereof is connected with the main control circuit (1) and also connected with the chip pin voltage via the first resistor.

5. The USB signal wake-up apparatus according to any one of claims 1 to 3, wherein The device is a neck ring. The peripheral device connected with the peripheral interface (2) is an AR glasses or a charging box. The AR glasses are connected with the peripheral interface (2) through a magnetic suction port.

6. The USB signal wake-up apparatus of claim 4, wherein, The device further comprises a second switch switching circuit (4) and a charging box plug-in detection circuit (6). The second switch switching circuit (4) is connected with the second output end of the first switch switching circuit (3) at the input end, connected with the wake-up circuit (5) at the second output end, and connected with the battery charging circuit of the device at the first output end. The charging box plug-in detection circuit (6) is connected with the main control circuit (1), and is used for sending a charging detection signal to the main control circuit (1) when it is detected that the charging box is plugged into the peripheral interface (2) through a pressure detection mode. The main control circuit (1) is connected with the control end of the second switch switching circuit (4), and is used for controlling the input end of the second switch switching circuit (4) to switch from being in communication with the second output end to being in communication with the first output end after the charging detection signal is received in the sleep state.

7. The USB signal wake-up apparatus of claim 6, wherein, The first switch switching circuit (3) and the second switch switching circuit (4) can adopt a double-channel USB switch or a multiplexer supporting USB signals at the input end.

8. The USB signal wake-up apparatus of claim 6, wherein, The charging box plug-in detection circuit (6) comprises a Hall sensor.

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